<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>我的OJ平台</title>
        <meta name="description" content="Charcoal is a free Bootstrap 4 UI kit build by @attacomsian at Wired Dots." />
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <!--Bootstrap 4-->
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    </head>
    <body>

        <nav class="navbar navbar-expand-md navbar-dark fixed-top sticky-navigation">
            <a class="navbar-brand font-weight-bold" href="#">我的OJ平台</a>
<!--            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#topMenu" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">-->
<!--                <a href="logout" class="navbar-toggler-icon" style="color: white">注销</a>-->
<!--            </button>-->
            
            <div class="collapse navbar-collapse" id="topMenu">
                <ul class="navbar-nav ml-auto" >
                    <div style="margin:5px" id="javaoj">
                        <a href="logout"> 注销</a>
                        
                    </div>
                </ul>
            </div>
        </nav>
        <!--hero section-->
        <section class="bg-hero">
            <div class="container">
                <div class="row vh-100">
                    <div class="col-sm-12 my-auto text-center">
                        <h1>我的OJ平台</h1>
                        <p class="lead text-capitalize my-4">
                            基于 Java Servlet 实现的OJ系统
                        </p>
                        <a href="#" class="btn btn-outline-light btn-radius btn-lg">项目链接</a>
                    </div>
                </div>
            </div>
        </section>
        <!--components-->
        <section class="my-5 pt-5">
            <div class="container">
                <!-- Tables  -->
                <div class="row mb-5" id="tables">
                    <div class="col-sm-12">
                        <div class="mt-3 mb-5">
                            <h3>题目列表</h3>
                            <table class="table table-striped">
                                <thead>
                                    <tr>
                                        <th>编号</th>
                                        <th>标题</th>
                                        <th>难度</th>
                                    </tr>
                                </thead>
                                <tbody id="problemTable">
                                    <!-- <tr>
                                        <td>1</td>
                                        <td><a href="#">两数之和</a></td>
                                        <td>简单</td>
                                    </tr> -->                                    
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
        </section>
        <!--footer-->
        <section class="py-5 bg-dark">
            <div class="container">
                <div class="row">
                    <div class="col-md-6 offset-md-3 col-sm-8 offset-sm-2 col-xs-12 text-center">
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                        <p class="pt-2 text-muted">
                            &copy; by <a href="https://blog.csdn.net/weixin_49830664?spm=1000.2115.3001.5343" target="_blank">文墨轩</a>
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                </div>
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        </section>
        <script src="js/jquery.min.js"></script>
        <!-- <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script> -->
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"></script>
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
        <script src="js/app.js"></script>
        <script>
            function getProblem(){
                $.ajax({
                    url:"problem",
                    type:"GET",
                    success:function(data,status){
                        makeProblemTable(data);
                    },error:function(data,status){
                        location.assign("login.html");
                    }
                })
            }
            function getUser(){
                $.ajax({
                    url:"admin",
                    type:"GET",
                    success:function(data,status){
                        if(!data.isAdmin){
                            location.assign("index.html");
                        }
                    },
                    error:function(data,status){
                        location.assign("login.html");
                    }
                })
            }
            function makeProblemTable(data){
                let problemTable=document.querySelector("#problemTable");
                for(let problem of data){
                    let tr=document.createElement("tr");
                    let tdId=document.createElement("td");
                    tdId.innerHTML=problem.id;
                    tr.appendChild(tdId);
                    let tdTitle=document.createElement("td");
                    let a=document.createElement("a");
                    a.innerHTML=problem.title;
                    a.href="problemDetail.html?id="+problem.id;
                    a.target='_blank';
                    tdTitle.appendChild(a);
                    tr.appendChild(tdTitle);
                    let tdlevel=document.createElement("td");
                    tdlevel.innerHTML=problem.level;
                    tr.appendChild(tdlevel);
                    let tdButton=document.createElement("td");
                    let button=document.createElement("button");
                    button.innerHTML="删除";
                    button.value=problem.id;
                    button.id="submit";
                    button.onclick=function(){
                    let body={
                        id: problem.id,
                    };
                    $.ajax({
                        url: "deleteProblem",
                        type: "Post",
                        data:JSON.stringify(body),
                        success:function(data,status){
                            if(data){
                                location.assign("deleteProblem.html");
                            }
                        }
                    })
                }
                    tdButton.appendChild(button);
                    tr.appendChild(tdButton);
                    problemTable.appendChild(tr);
                }
            }
            let button=document.querySelector("#submit");
            
            getUser();
            getProblem();
            
        </script>
    </body>
</html>
